Fuel-mixer.



H. WALTHER. FUEL MIXER. APPLICATION FILED JULY 3. l9l5- 1 178,891 Patented Apr. 11, 1916.

hweu foz: 10ml ewes:

V :1 Norma UNITED STATES PATENT ()FFICE.

HERMAN WALTHEB. OF DAVENPORT. IOVA.

FUEL-MIXER.

Application filed July 8. 1915.

Yb hom it mu concern.

a citizen of the lfnited States. residing at Davenpo t. in the county of Scott and State of lmvu. have invented certain new andustful Improvements in Fuel-Mixers. of which the following is a specification.

This invention relates to improvements in fuel mixer of the type which are interposed in the gasolene vapor and mixture pipe leading lrom the carbureter to the manifold or supply port of an internal combustion engine.

The object of the present invention is to provide an improved device of this nature capable of etl'ecting a morecomplete, thorough. and uniform mixture of the gas and air. in reasingthe efliciencv of thecharge and minimizing the consumption @of fuel.

Another object of the invention is to provide an improved device of this character which will prevent back firing from the c vlimlers through the mixture pipe into the carbureter.

A further object of the invention is to provide an improved device of this nature which will be simple and inexpensive in construction and that can be readily applied to the mixture pipe.

The invention broadly comprehends the use of a pluralit of sieves adapted to be d r-spiiised transversely of the mixture pipe with portions of the respective sieves spaced an each other and a foraminous member posed rentmllv and longitudinally of the mixtr e pipe and bridging the space between the in 'erse sieves. said member being adapted to intercept the more rapid and unbroken globule bearing stream of the inixture along the central part of the conduit, dividing. breaking up and deflecting the ame. laterally to the outer portions of the transverse sieves and into the mixing space tl-icrebetween. said member cooperating with th transverse sieve to effect a very complete, thorough and uniform mixture of the gas and air.

The invention will be understood from the following detailed description when-considered in connection with the accompanying drawings, forming part thereof, and wherein I have illustrated by way of example a preferred embodiment of the invention and a slight mmlitication thereof.

in the drawings: Figure 1 is a section iulqfn through the adjacent portions of the dis harge; pipe of a carbureter and the de- Specification of Letters Eatent.

Patented Apr. 11, 1916.

Serial No. 38.700.

livery pipe that leads therefrom to the manifold or supply port of an internal combustion engine: Fig. 2 a bottom plan view of the mixing device; Fig. 3 a section on the line 3-2 of Fig. 2: and Fig. t is a detailed view of a slightly modified construction. of the lmigitudinally extending member of the mixing device.

Referring to a detailed description of the drawings, wherein like reference characters designate corresponding parts throughout the several views, 1 oesignates the discharge pipe of a carbureter and the delivery pipe leading therefrom to the engine manifold. The pipes 1 and are provided with the usual coupling flanges 3 and 4 connected by bolts 5. interposed in the mixture conduit thus formed. conveniently atthe point of connection of the pipes .l and 2 is the fuel mixer comprising a plurality of transverse sieves and a central longitudinally extending intercepting member 8 bridging the space between the sieves (3. The transverse sieves, two of which are employed in the present instance are preferably cup-shaped, of varying depth and arranged in nested relation shown with a mixing space 6 therebetween. The sieves are preferably constructed of wire mesh and the front sieve or the one nearest the carburetor of larger mesh than the other. The member 8 consists of a relatively small cone of line wire gauze secured to and supported by the transverse sieves 6, said cone extending through and snugly fitting openings 9 and 10 provided for this purpose in the transverse sieves or screens, the cone being supported near its apex by the front screen or the one nearest the carburetor, and at its base by the other screen and being suitably secured atthese points to the respective screens by soldering or in any other. desired way.

In Figs. 1, 2 and 3 of the drawings the central longitudinal intercepting member 8 is shown as consisting of a hollow cone of wire gauze. A slightly modified construction is illustrated in Fig. 4 of the drawing, in this instance, the cone being made up of a roll of wire gauze. v

The sieves are connected'by a gasket 9*, U-shaped in cross section, the sieves being provided with n'iarginal flanges13 and 11 clamped or cast. between the folds of the asket. As illustrated in Fig. l of the drawing, the device is adapted to be positioned within the mixture pipe with the gasket 9 clamped between the coupling flanges o and at of the pipes l and 2, the gasket being formed of lead or other suitable material and serving additionally to provide a gas tight connection. As shown,

the device is adapted to be arranged in the duit bearing most of the unbroken gasolene or oil globules is intercepted by the centrally disposed longitudinally extending member 8, said member serving to break up the gasolene or oil globules carried by this main stream and to deflect the stream lat erally toward the outer portions of the transverse screens or sieves and the outer portion of the mixing space tl'ierebetween, the member coacting with the transverse screens to produce a very fine division of the oil and a thorough and uniform comvmingling of the gas and-air. In practice the device has been found to materially increase the efliciency of the charge and to greatly reduce the amount of fuel consumed. The device also serves as an. ef-

fective guard against back firing from the cylinders through the mixture pipe into the carburetor, in such cases acting to break up the force of the gas and prevent the passage of the flame to the carbureter.

I desire it to be understood that modifications and minor changes in the particular construction illustrated in the drawings, as will appeal to those skilled in the art and properly fallingwithin the scope of the appended. claims may be made Without departing from the spirit of the invention.

What I claim is: t 1. A device for the purpose set forth,

' comprising a plurality of transverse screens longitudinally of the transverse screens into arranged with portions of rest arranged withportions of respective screens Lspaced from each other, and a relatively small gauze cone extending centrally and the space there-between.

2. A device for the purpose set forth, comprising a plurality of. transverse screens arranged with portions of respective screens spaced from each other, and a relatively small foraminous cone disposed centrally and longitudinally of the transverse screens and bridging the spacetherebetweein A device for lh purpose set forth, comprising a plurality of transverse screens LING screens relatively Spacedfrom each other, and

small foraminous cone disposed centrally ings at their central portions and the cone ,fitting snugly within said openings and being supported by the said screens.

'4. A device of the character described, comprising a plurality of transverse cupshaped screens arranged in nested relation with a mixing space between central portions thereof, and a relatively small gauze cone extending centrally and longitudinally of the cup-shaped screens.

5. A' device. of the character described, comprising a pair of transverse screens having their central portions spaced fro-m each other, and a relatively small gauze cone disposed ccntrally and longitudinally of the screens and bridging the space therebetween, said transverse screens serving to support the cone in position and being provided with openings at their central portions, the said cone near its apex fitting snugly in the opening of one of the screens, and near its base fitting within the opening in the.

other screen.

6. The combination with a carburetor and mixing pipe of a fuel mixer comprising a plurality of transverse screens arranged with central portions of respective screens spaced from each other, and a relatively small gauze cone extending centrally and longitudinally of the transverse screens into the space therebetween, said fuel mixer being adapted to be interposed in the mixture pipe with the apex of the cone presented toward the discharge pipe of the carbureter.

7. A device of the characterdescribed, comprising a plurality of transverse cupshaped screens arranged in nested relation with a mixing space between central portions of respective screens, a relatively small gauze cone extending centrally and longitudinally of the cup-shaped screens, and a gasket U-shaped in cross section connecting said screens, said screens being provided with the marginal flanges clamped between the folds of the gasket.

8. A device for the purpose set forth, comprising a plurality of transverse screens arranged. with central portions of respective screens spaced from each other and a relatively small hollow cone of wire gauze supported by said screens and extending centrally and longitudinally thereof into the space therebetween.

In testimony whereof I affix my signature in the presence of two witnesses.

HERE'IAN WALTHER,

Witnesses 

